Brazil has supplied collectors with wonderful mineral specimens for decades.
The gem material such as tourmaline, aquamarines, and topaz receive most of the
acclaim, however there are a great diversity of Brazilian minerals worth noting.
Because we purchase older collections we often have fine examples of Brazilian
minerals that are not common in today's contemporary mineral market.

OKM-820

FIGURED SPECIMEN

Back or bottom

Top termination

Base termination

OKM-820 Quartz Brazil.
Ex.
Harold L. Dibble collection.
FIGURED SPECIMEN from the book, Quartz: An Introduction to Crystalline Quartz,
page 83 By Harold Dibble. This fine specimen is a full page figure in
Harold's book, and an impressive quartz specimen in and of itself. It is a
floater measuring 17.6 x 11 x 7.5 cm. The crystal is double terminated,
has a medium to high luster on it's upper display surfaces and a lower luster on
what I would call its base (back side). There are several chips as seen in
the images so it is in good, not great shape. The surface growth features
are quite amazing and even better in person. Everything here is in
parallel growth on the one crystal. $1,200

OKM-992 Brazilianite Mendes Pimentel, Minas
Gerais, Brazil. Ex. Harold L. Dibble collection. An attractive
sulfur yellow primary crystal that is gemmy with a couple of translucent
attachment crystals and other minerals in base. 3.8 x 3 x 2.8 cm overall.
Edge contacts and chipping on attached crystals but main crystal is nice.
A very good example of this material. $120

OKN-551

OKN-551 Topaz Dom
Bosco, Minas Gerais, Brazil. 4 x 1.2 x .8
cm single crystal of rich color and very high luster. Minor natural pitting but
one is large. No damage, gemmy regions. A very fine specimen of this material
at a reasonable price. $160

OKN-545 Tourmaline Minas Gerais, Brazil.
Ex. Harold Dibble collection. Nicely formed single crystal of pink tourmaline
capped by green. Very gemmy internally (facetable). Very tiny flak off one
edge only noticed with magnification. Good luster and a couple tiny white
crystals on termination (muscovite?). Very nice example. $65

OKN-712

OKN-712 Tourmaline Aracuai,
Jequitinhonha Valley, Minas Gerais, Brazil. Ex. Harold L. Dibble
collection. Finding miss-sharpen tourmaline crystals is not all that
uncommon but one of this size and high quality is truly unique. It was one
of the centerpieces of Harold's collection. This single terminated crystal
is 28 cm long (almost a foot!) and the primary crystal is 3.5 cm wide and 2.1 cm
thick on average. It is very high in luster and one side crystal is
clipped off, a likely contact. I'd describe it as damage free. It
displays great from any direction. The curve is not what is commonly seen,
a healed break or series of breaks. It is just simply curved... smooth,
symmetrical and spread over the entire length of this massive crystal! The
termination is complex and generally fibrous in form. All the prism faces
show moderate striations. This is one of those specimens that collectors
simply go, "Wow"! and stare blindly at. Even better in-hand. $3,000

OKM-174 Beryl Minas Gerais, Brazil.
Ex. Harold L. Dibble collection. Termination is smooth and transparent
likely due to polishing. Every second face (alternating faces on prism) has micro mica crystals embedded in it
giving them a frosted appearance. One large inclusion is a mica otherwise
very gemmy internally. 8.2 x 2.6 x 2.3 cm. Light green color.
Good luster on most faces. Minor chipping on stepped termination seen in
last image. $800

OKM-155

Back

OKM-155 Adularia Morro Redondo, Minas Gerais
Brazil. Ex. Harold L. Dibble collection. A huge single crystal of
chalk white color. The luster varies face to face but none are
exceptionally high. Excellent form. Thin crack (natural) running
down the center. Two corners have cleaves but these could be displayed
downward. The unusual size and uncommonness of the material still make it
a desirable specimen that displays nicely. $325

OKN-431 Quartz Minas
Gerais, Brazil. Ex. Harold L. Dibble collection.
A cluster of nice quartz points with overgrowths of a second generation of much
smaller, double terminated, quartz crystals. All crystals are clear to slightly milky and of very
high luster. One matrix contact and one very small piece of attached
matrix. No damage. Really nice quality quartz specimen. 10 x
8.8 x 5.5 cm. $275

OKN-426

OKN-426 Quartz Rio Grande do
Soul, Brazil. Ex. Harold L. Dibble collection.
Unusual stalactites of light pink quartz
standing off a quartz matrix and all leaning in one slanted direction. The
stalactites have green cores and a feathery appearance that is attractive.
The luster is excellent and there is no damage present. A substantial
plate measuring 11 x 9.2 x 5 cm. Excellent and unusual quartz specimen.
$400

OKN-416

OKN-416 Calcite on Amethyst Irai, Rio
Grande, Brazil. Ex. Harold L. Dibble collection.
This large cabinet specimen is a partial vug of light colored amethyst crystals
containing an acicular group of calcites attached to its base. The calcites are
reattached as a single group to the matrix but the final product displays as a damage free
specimen with high aesthetics (from the side or back with magnification one can
see it is repaired, third image). It measures 22 x 15.5 x 8 cm overall
with calcites to 7 cm. The long thin calcites show no damage nor does the
fine cathedral of quartz it resides in. Due to the repair I will offer
this at a lower than expected price. $500

OKM-126 Quartz Galileia, Minas Gerais,
Brazil. Ex. Harold L. Dibble collection.
FIGURED SPECIMEN from the book, Quartz: An Introduction to Crystalline Quartz,
page 80 By Harold Dibble. This is a complex shard from a very
large crystal showing parallel growth of surface features. Damage free
floater. Interesting to look at and much of it is clear with a slight
smoky tint. Glassier looking than the photos seem to indicate. 9.1 x
5.1 x 1.3 cm. $225

OKM-127

Back

OKM-127 Quartz Minas
Gerais, Brazil. Ex. Harold L. Dibble collection. A 10.4 x 6 x 5.3 cm
single crystal. Healed surfaces, no damage. Front very nice with
secondary quartz that is glassy and slightly smoky over an original, ugly,
crystal. Muscovite sticking out on one side in lower region of crystal.
Stands for display. Nice. $200

OKM-131 Quartz Minas Gerais, Brazil.
Ex. Harold L. Dibble collection. Beautiful "window quartz" with clay
inclusions. A huge ENHYDRO in this one. The bubble when stretched
out and moving is about a cm long. It moves about 2.5 cm within a
triangular shaped opening. It is near the surface and can not be missed!
Strong base contact, otherwise in good shape. The internal features are
numerous and not something I can show well in photos. Great piece.
$395

OKM-123

OKM-123 Morganite Minas Gerais, Brazil.
Ex. Harold L. Dibble collection. A good specimen of this difficult to get
material. Front side is first photo showing only one tiny chip. Back
side has numerous chips. Front and back are modified and those faces are
striated (rather unusual). The striations are obvious on the back and very
light on the front. The single crystal was once on clevelandite and some
remains embedded in it's base. Some black tourmaline inclusions but much
of the internal material is gem or gem material with fracturing. The piece
measures a healthy 10.5 x 6 x 3 cm. $2,500